/Engine/Source/Runtime/SlateCore/Public/Input/DragAndDrop.h
Sets the cursor to override the drag drop operations cursor with so that a control can give temporary feedback, for example - a slashed circle telling the user 'this can't be dropped here'.
void SetCursorOverride ( [TOptional](API\Runtime\Core\IO\TOptional)< [EMouseCursor::Type](API\Runtime\ApplicationCore\GenericPlatform\EMouseCursor__Type) > CursorType )